[hibernate-issues] [Hibernate-JIRA] Resolved: (HHH-2183) org.hibernate.LazyInitializationException: failed to lazily initialize a collection while using lazy set with key as property-ref in the mapping

[Gail Badner (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2183?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gail Badner resolved HHH-2183.
------------------------------

      Assignee: Gail Badner
    Resolution: Rejected

Please use the user forum (http://forum.hibernate.org/) for help.

> org.hibernate.LazyInitializationException: failed to lazily initialize a collection while using lazy set with key as property-ref in the mapping
> ------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HHH-2183
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2183
>             Project: Hibernate3
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.1.3
>         Environment: Oracle 9i
>            Reporter: Artur Jonak
>            Assignee: Gail Badner
>            Priority: Blocker
>         Attachments: hibernate-testcase.zip
>
>
> I have an entity which can have multiple titles located in a separate table. I mapped this as a set where key attribute references other property of the entity:
> <set name="titles" table="TTitle" cascade="none" lazy="true" inverse="true" mutable="false">
> 			<key column="ID" property-ref="parentId"/>
> 			<!--key column="ID"/-->
> 			<element type="string" column="title"/>
> 		</set>
> when I try to display this set I get an exception: 
> org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: test.lazysetinit.Record.titles, no session or session was closed
> 	at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
> 	at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
> 	at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:343)
> 	at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
> ...
> The entire mapping is as follows:
> 	<class name="Record" table="TRecord" mutable="false">
> 		<id name="id" type="long">
> 			<column name="ID" sql-type="number" length="12" not-null="true" unique="true"/>
> 		</id>
> 		<set name="titles" table="TTitle" cascade="none" lazy="true" inverse="true" mutable="false">
> 			<key column="ID" property-ref="parentId"/>
> 			<!--key column="ID"/-->
> 			<element type="string" column="title"/>
> 		</set>
> 		<join table="TRecordInfo" inverse="true" fetch="join" optional="false">
> 			<key column="ID"/>
> 			<property name="parentId" not-null="false" />
> 			<property name="status" />
> 		</join>
> 	</class>
> Attached the test case: test.lazysetinit.LazySetInitTest. DB schema is located in test/conf/lazysetinit/schema.sql
> Regards,
> Artur

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